Okay kiddo, let me explain the timeline of history of environmentalism in a simple way.
A long time ago, people lived in harmony with nature and took care of the earth. But as time passed, people started to use the earth's resources in a bad way. They cut down trees, polluted the air and water, and littered the environment.
In the 19th century, people started to realize that the environment was important and needed to be protected. They began to form groups and organizations to fight against pollution and protect nature.
In the 1960s, people became even more aware of the damage being done to the environment. They protested against pollution and demanded laws to protect the earth. That's also when the first Earth Day happened on April 22, 1970. People all over the world celebrated the day and demanded action to save the planet.
Over the years, environmentalism became more mainstream and governments started making laws to protect the environment. People began to recycle, use renewable energy, and live in more sustainable ways.
Today, environmentalism is about finding ways to live on this planet without damaging it. It's about conserving resources, protecting animals and their habitats, and making the world a better place for us and future generations.